package com.zklh.leetcode.top100;

import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;

/**
 * 矩阵置零
 *
 * @version 1.0
 * @Author tongnan
 * @Date 2023/10/23
 */
public class Solution73 {
    public void setZeroes(int[][] matrix) {
        boolean firstRowZero = false;
        boolean firstColZero = false;
        for (int i = 0; i < matrix.length; i++) {
            if (matrix[i][0] == 0) {
                firstColZero = true;
            }
        }

        for (int j = 0; j < matrix[0].length; j++) {
            if (matrix[0][j] == 0) {
                firstRowZero = true;
            }
        }

        for (int i = 1; i < matrix.length; i++) {
            for (int j = 1; j < matrix[0].length; j++) {
                if (matrix[i][j] == 0) {
                    matrix[i][0] = 0;
                    matrix[0][j] = 0;
                }
            }
        }
        for (int i = 1; i < matrix.length; i++) {
            if (matrix[i][0] == 0) {
                for (int j = 0; j < matrix[0].length; j++) {
                    matrix[i][j] = 0;
                }
            }
        }

        for (int j = 1; j < matrix[0].length; j++) {
            if (matrix[0][j] == 0) {
                for (int i = 0; i < matrix.length; i++) {
                    matrix[i][j] = 0;
                }
            }
        }

        if (firstColZero) {
            for (int i = 0; i < matrix.length; i++) {
                matrix[i][0] = 0;
            }
        }

        if (firstRowZero) {
            for (int j = 0; j < matrix.length; j++) {
                matrix[0][j] = 0;
            }
        }
    }

    public static void main(String[] args) {
        Solution73 solution73 = new Solution73();
        int[][] matrix = {{0,1}};
        solution73.setZeroes(matrix);
        System.out.println(Arrays.deepToString(matrix));
    }
}